100 A with management
- Cost
- Usually lower
- Work
- Management module + circuit
- When it makes sense
- Standard home, one charger
- Charging impact
- Charger may slow during peaks
Do you need a 200 A panel for an EV charger?
Not always. A Level 2 charger can sometimes work on a 100 A panel when the load is calculated correctly and dynamic load management is added where needed.
Short answer
A 200 A panel is not mandatory in every case. The right decision depends on the load already present in the home: heating, heat pump, spa, range, dryer, water heater, and other major appliances.
If the 100 A panel has enough capacity or dynamic load management is appropriate, the installation can stay simpler. If the calculated load exceeds the limit or future electrical projects are planned, an upgrade may be recommended.
Dynamic load management
Load management monitors household consumption and temporarily reduces charger output when demand rises. Charging automatically resumes when the home's load drops.
This can avoid a panel upgrade while keeping overnight charging practical. It must be selected and installed based on the actual electrical configuration.
100 A panel vs 200 A upgrade
The choice comes after a load calculation, not just by reading the amperage on the panel label.
| Criteria | 100 A with management | 200 A upgrade |
|---|---|---|
| Cost | Usually lower | Higher |
| Work | Management module + circuit | Panel replacement/modernization |
| When it makes sense | Standard home, one charger | Large home, two EVs, future projects |
| Charging impact | Charger may slow during peaks | More available capacity |
200 A upgrade
- Cost
- Higher
- Work
- Panel replacement/modernization
- When it makes sense
- Large home, two EVs, future projects
- Charging impact
- More available capacity
When to upgrade to 200 A
An upgrade becomes relevant if the panel is saturated, several major electrical loads are present, two EVs are planned, or upcoming projects such as a heat pump, spa, or larger renovation are already on the roadmap.
It may also be required when the existing panel is old, damaged, poorly labelled, or incompatible with a compliant new circuit.
What we check during the assessment
The assessment covers panel amperage, space for a new breaker, existing loads, distance to the charger, cable type, indoor or outdoor location, and upcoming electrical projects.
Main service: EV charger installation in Quebec →
Related guides
Frequently asked questions about panels
Is a 100 A panel dangerous with an EV charger?
No, not when the installation is calculated and protected correctly. The risk comes from adding a charger without checking the real load.
Does load management slow charging a lot?
It can temporarily slow or pause charging during consumption peaks, then resume automatically. For overnight charging, the impact is often small.
How much does a 200 A upgrade cost?
The cost depends on the panel, service entrance, accessibility, and local requirements. We price it separately rather than assuming it is needed.
Check your panel before choosing a charger.
Free assessment of panel capacity, cable route, and recommended solution.